CartThe International Society for Trenchless Technology
Found 95 results with term `` , from `Intl No-Dig-2019 Florence`
| Displaying 41 to 60 of 95 total papers | Previous 20 1 2 3 4 5 Next 20 | ||||||
| ID | Title | Event | Company | Year ▼ | Category | Abstract | Add to Cart |
|---|---|---|---|---|---|---|---|
| 2298 | Investigation of Cracks Found in the Circumferential Direction on Jacking Pipes Author: Yuki Kaneshiro, Jun Ozaki and Masahiro Yoshimoto |
Intl No-Dig-2019 Florence | Tepco Power Grid | 2019 | Microtunneling and Pipe Jacking |
In the urban area which TEPCO Power Grid supplies electricity, pipes and tunnels are buried underground for electric power cable accommodation. Since the urban area is teeming with traffic, these tunnels are constructed utilizing trenchless technology such as pipejacking from the view of avoiding traffic congestion. During the construction of a tunnel by pipejacking in Kanagawa prefecture, some cracks occurred on pipes. This pipe was about 500 m in length and 900 mm in diameter, including a sharp curvature of 60 m radius. These cracks were mainly found in the circumferential direction, where the curved sections were. To investigate the causes of these cracks, the following procedure was taken: (1) find similar cases in the past; (2) clarify the characteristics of these projects; (3) interview the pipe manufactures and contractors; (4) list up the possible causes of cracks; (5) narrow down the causes of cracks by testings; and (6) determine the cause of cracks. In order to identify the cause of cracks, experiments using a full-scale model and numerical analysis were conducted to reproduce actual phenomena. This report also includes measures for preventing the same kind of trouble. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2258 | Joining methods for CIPP products in pressure pipe systems Author: Federica Fuselli, Jens Wahr |
Intl No-Dig-2019 Florence | Rotech Srl; Diringer & Scheidel Rohrsanierung Gmbh & Co | 2019 | Cured in Place Pipeliners |
At the transfer points to the existing network and at the connections to the individual sections to be renovated, the trenchless renovation of pressure pipes using CIPP systems requires reliable connection technologies which are also adapted to the respective renovation system. Through these connections, a complete system can be integrated into the existing pressure pipe network.Solutions are employedsuchthat, depending on the requirement, either include the existing pipe's support orfunction completely independent. Depending on the condition and material of the ends of the old pipe, these can be further used as a sealing and supporting element, only as a longitudinal anchor or be completely discarded. The latter permits solutions that require no leakage and tensile strength that is only acquired by using new components.Thereby, system checks and approvals of the respective system liner/connection form the basis of the longevity of these interfaces to be able to ensure the appropriate application. Thisapplies in the case of increased requirements, e.g. due to dynamic loads and/or high-frequency of load changes which, in the meantime, are taken into consideration in the actual test programs. The company D&S GmbH & Co KG and their Italian subsidiary, ROTECH SRL, are the driving force and attendant in the development of these innovative technologies. The lecture indicates the requirements, checks and the options, describes the selection criteria and illustrates thetechnologies based on the project examples.The technical options and classifications presented here are performed based on the RSV information leaflet "Renovation of sewage pressure lines and pressure hose liners", which the author also helped to produce. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2314 | Leak detection using helium as a tracer gas and the primus line solution for pipe rehabilitation Author: Avishay Schnaidman |
Intl No-Dig-2019 Florence | Vp- Trenchless Pipeline Rehabilitation | 2019 | Site Survey / Pipe Inspection |
utility providers around the world are challenging with leaks of aging water infrastrucutres. Crinking water is a precious resource and should be protected from being in the pipe system. There is an ongoing struggle to locate leaks and reduce water loss to the least possible. Most common leak detection technologies are based on acoustic system but experience shows that they may lead to inaccuracies due to interference with external noise, low pressure in the network, plastic pipes and limitation of the physical principle of sound propagation, therefore insufficient in order to detect sounds produced by water leakage. The paper will show the process of leak detection usign Helium gas in an under pressure operating water main. , firthermore, the paper will present (in general) the Primus Line solution to potential leaking pipes in general. The paper will present a case study on the trenchless rehabilitation of water mains using the Primus Line system. The case study will demonstrate that it is possible to rehabilitate a (a "wag") 530m of DN350 PN16 water main located in the middle of an urban area with 9 bends of up to 45 degrees. The paper will conclude with the advantages of this leak detection method. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2321 | MECHANIZED PIPE REHABILITATION DESIGN AND CASE STUDY Author: Ladan Sahafi; Chris Sivsend |
Intl No-Dig-2019 Florence | Americore International; Akkerman Equipment | 2019 | Slip Linings (Loose Fit) |
Larger diameter sanitary sewer pipelines may be re-lined with Glassfibre Reinforced Polyester (GRP) pipes using specialty made sliplining jacking machines. While winches and or hydraulic jacks have been used to pull or pushed GRP liners into existing sewers, these systems are less effective in larger diameter >DN1600 mm (66 inches) and greater, especially with rapid live flows present and not bypass pumping in place. In the United States, the contractors use large sliplining machines with twin hydraulic motors and synchronized caterpillar chain drive to traverse the pushing arm at the flow level in both upstream and downstream directions in a very rapid manner. This method allows for sewer to be in full service and causes no interruption to service in live flows without a need for bypass-flow pumping systems. The cost savings of long-distance pushing (jacking) in live flows without bypass and controlled jacking loads and speed are a few of the benefits of these new highly mechanized systems. The longest drives to date utilizing GRP pipes are as follows; 1700 meters (5,200 LF) DN1250 mm (51 inch) 1370 meters (4,500 LF) DN1400 mm (57 inch) 761 meters (2,500 LF) DN2500 mm (96 inch) This paper will discuss the design and construction of such sliplining machines and field assembly and operations of the method that was utilized in Oakland, California; 3rd Street Sewer Rehabilitation project. Challenges and success of the project will be discussed, and future upgrades to the system will be considered. Use of modern automated pipe relining equipment and high strength GRP jacking pipes results in an overall cost effective solution to CIPP, SPR and other lining methods currently being marketed. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2290 | Microtunneling Projects for Power-Transmission Pipes - Steep Slopes and Casing Technology Author: Masahiro Yoshimoto, Shinjiro Nakamura and Kazuki Kito |
Intl No-Dig-2019 Florence | Tepco Power Grid, Inc | 2019 | Microtunneling and Pipe Jacking |
The installation design for power-transmission pipes with micro-tunneling sometimes requires steep gradients that are unique to electrical power transmissions. This paper reports some unique projects including an internal casing pipe laying technology, conducted by TEPCO Power Grid. The alignment design for power transmitting pipes does not need to consider gravity slopes which are typical to sewer designs. Therefore, steep gradient lines can be incorporated. As an example of one of the projects of this kind, an installation of 900 mm diameter pipes using mud-slurry micro-tunneling is given. The driving distance was 583 m, the maximum height difference was 18 m (maximum downward gradient of 13.5% and a maximum upward gradient of 8.3%). When the gradient is steep, blockage of slurry discharge pipes can be expected. To prevent the blockage, the rate of curvature at the bottom of the path needs to be lowered. By setting a flat section at the bottom, gravels can be avoided from clogging inside the pipes. As another study case of steep gradient lines, the internal multi-pipe (casing) laying technology was employed for laying four 130 mm diameter pipes into the 800 mm diameter host pipe. The pipes wereassembled on the trolley set at the shaft, and the pipes were pulled in together to the host pipe. This technology made possible the long-distance pipe-laying installation, which led to the availability of long micro-tunneling projects for this purpose, exceeding 500 m in length (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2263 | New Performance of a NO-DIG Technology: Pipetronics eMULTI-one Robot-System with extended applications Author: Christian Noll |
Intl No-Dig-2019 Florence | Pipetronics Gmbh & Co. | 2019 | Cured in Place Pipeliners |
Worldwide unique: One system for filling, grouting and mounting top hat profiles for circular and egg-shaped pipes. Pipetronics turns the pipe robot unit into a complete system: PI.TRON3-Three functions in one: milling, grouting, hat profile. Also newly developed was the chassis for egg shaped pipes. This was completely redesigned and equipped with electric drives forheight adjustment and stabilization in the pipe. So far, this chassis was available only in a purely mechanical variant. Thus, the technology PI.TRON3is used in addition to circular profile in egg shaped profile as well. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2236 | NEW TECHNICAL SOLUTIONS FOR THE BURIAL OF DISTRIBUTION NETWORKS: BENEFITS AND REASONS WHY Author: Luca Venturi; Valeria Nascimben |
Intl No-Dig-2019 Florence | Langmatz Gmbh; Outline Srl | 2019 | Asset Management and Work Planning |
The electricity and telecommunications networks have been characterized in recent years by an important development in particular within Italian urban centers: on the one hand the main telecommunication operators have ventured into the construction of their own infrastructures to host fiber optic access networks.On the other hand, the growing demand for electricity from domestic and industrial users is calling for a constant expansion of the distribution network.Especially in the areas with the highest density of housing, the consequence of these two phenomena is the overlap, of parallel and duplicated networks and the consequent proliferation of infrastructural elements above ground, with both aesthetic and functional evident impacts on urban furnishings and the creation of superfluous architectural barriers.In the comingyears this phenomenon will be steadily increasing dueto further investments planned for the development of broadband networks (optical fiber and 5G),the spread of electric vehicles and the related public charging stationsand the adoption of "intelligent infrastructure elements" for the development of Smart City projects.The purpose of this document is the presentation of possible technical interventions for the burial of infrastructural elements today housed off-road (such as mobile radio cells, distribution cabinets, meters ...) and the consequent advantages deriving from the adoption of thenewtechniques, in terms of:o Improvement of the impact on urban furnitureo Reduction of obstacles and architectural barrierso Greater environmental sustainabilityo Reducinginterventions for the laying of the infrastructures and consequent decreaseof the execution time of the road works and related costso Increase of infrastructure securityo Increased resistance to environmental degradation and vandalismo Reduction of maintenance interventions (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2315 | NO-DIG INVESTIGATION AROUND PALAZZO VECCHIO, FLORENCE ITALY Author: Massimo Coli, Marco Tanganelli, Vincenzo Sapia, Valerio Materni, Fabio Giannattasio and Marco Marchetti |
Intl No-Dig-2019 Florence | Department Of Earth Sciences, Florence University; Department Of Architecture, Florence University | 2019 | Site Survey / Pipe Inspection |
Palazzo Vecchio, at Florence (Italy) date back to 1299 when Arnolfo di Cambio built its foundation onto Roman and Medieval ruins. During centuries,the Palace had been enlarged incorporating adjacent buildings until occupying an entire city block; in the meanwhile, the buildings all around had been dismantled for creating the Piazza della Signoria. Recently, in needs for detailed study regarding the subsoil of the area, we opted for the execution of no-dig geophysical investigation suitable to giveinformation about the presence of ruins and to map shallowbedrock. For this target, we acquired fast and non-invasive geophysical data by mean the capacitive coupled resistivity method,usinga multi-receivers array and a 5 m dipolar transmitter (OhmMapper system by Geometrics) along two sides of the Palazzo Vecchio and acrossPiazza della Signoria. Raw data have been processed to remove outliers, and then analysis modeled to recover the subsurfaceresistivity patternup to about 5 m below the street datum, about at the supposed level of the pre-Roman natural ground. The 2-D resistivity sections show the presence ofa heterogeneous resistivity distribution highlighted by both horizontal and vertical sharp contrasts with no evidence of a flat and continuous bedrock. These geophysical anomalies can be reasonably attributable to dismantled buildings ruins. Geophysical resultshave been comparedwith ancillary information,either geological or archaeological,with the aim to classify and characterize related geologicaland archaeological features. The adopted geophysical approach rapidly providesuswith the very near surface geophysical picturesbelow and around the Palazzo Vecchio, contributing to enhance the subsoil knowledge of the area with a quick and cheap no-dig investigation methods. This result can guide both addressed archaeological in situ investigation and sub-service excavation worksavoiding damaging archaeological features (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2267 | No-dig renovation of pressure pipelines, re-connection techniques and case studies Author: Firmino Pires Barbosa |
Intl No-Dig-2019 Florence | Reline Aptec Gmbh | 2019 | Cured in Place Pipeliners |
The trenchless rehabilitation of pressure pipelines is nowadays possible with various systems based on different materials. Since the pressure pipeline network is not using manholes or shafts for connecting and diversion of the flow, the re-connection of relined pipelines is a big challenging demand for successfully conclusion of such no-dig renovation projects. Based on the GRP hose liner of RELINE APTEC, we will present various connection systems in detail. The use of the re-connection techniques depends on the material and on the condition of the pressure lines to be renovated, as well as on the static design requirements for the lining system: independent and self-supporting liner or interactive and semi-static liner. The application of GRP hose liner for renovation of pressure pipelines is increasing the choice of systems and the alternatives for optimization of the design and the cost effectiveness of a no-dig renovation project.Liner end sealing with the so-called liner inner sleeves transmits the force stresses onto the existing old pipe. However, most of the cases, the decision for renovation of the existing pipelines is due to high corrosion and subsequence bursting issues. Therefore, this solution is very restricted in its application. A more technically sensible solution is the re-connection of the liner with flanged GRP couplings. These GRP couplings either can use loose flanges or monolithically pre-produced flange adaptors. In some application, it can be necessary to strengthen the re-connection to the liner with additionally manually laminated glass fiber. The sealing of the liner edge to the flanged GRP coupling is the key role in this application. It is necessary to provide a vacuum resistant sealing of the liner end to the flanged GRP coupling, to avoid at any circumstance a pealing of the liner inner coating. The application of the above-mentioned re-connecting techniques is described in detail as following with references to the job site respectively. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2237 | NOVEL BUSINESS MODELS IN SUPPORT OF TRENCHLESS CITIES Author: Chris Rogers, Aryan Hojjati, Ian Jefferson and Nicole Metje |
Intl No-Dig-2019 Florence | Department Of Civil Engineering,university Of Birmingham | 2019 | Asset Management and Work Planning |
It has been stated that we are less in need of novel construction technologies than we are of novel business models. This paper argues that this truism is especially relevant to the trenchless technology industry -there is a remarkably comprehensive range of trenchless technologies that could be applied in urban settings to minimise the short-term disruption and long-term damage to society and the streets that serve them. However the fact that they are not routinely and universally used points to major deficiencies in the business models adopted when urban engineering works are proposed. This paper presents a new approach to the development of alternative business models that capture not only the direct and indirect costs of engineering works, but also the broader social and environmental costs.In essence it identifies all of the potential benefits that the engineering works might bring about and balances them against all of the adverse consequences of the works. To do this, a process of system mapping needs to be undertaken such that all of the systems that are influenced by the engineering works are identified, and the points of dependency and interdependency are understood. These are opportunities for value creation or adverse consequences to arise -negative value, if you wish.Once this value framework has been established, it is then possible to change the elements within it by adjusting, iteratively, the engineering designs. By making transparent the full consequences of alternative engineering approaches to solving any particular problem -repair, upgrade or installation of a pipeline for example -it becomes more difficult to justify short-term cost-saving expedience when long-term damage is manifestly an outcome. This therefore supports a move towards proactive asset management, such as the introduction of swarms of miniature robots to assess pipeline condition -new research that will be presented as an example (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2264 | Numerical Analysis of the Behavior of Pressurized Underground Pipelines Rehabilitated by Cure-In-Place-Pipe Method Author: K. J. Shou and C.C. Huang |
Intl No-Dig-2019 Florence | Department Of Civil Engineering, National Chung-hsing University | 2019 | Cured in Place Pipeliners |
Due to the humid climate in Taiwan area, the underground pipes are prone to be damaged by corrosion, which could be more severe for the environment with high salinity near the coast. In addition, the arrangement of underground pipelines in Taiwan area is complicated because the installation of those pipelines is short of long-term planning. In this study, the numerical simulation software ABAQUS was used to simulate different geometries of underground pipelines, i.e. straight line and curved pipeline, damaged by corrosion. The stress and displacement behavior was analyzed for scenarios with different internal pressure and surface loading conditions. In addition, the performance of the Cure-In-Place-Pipe (CIPP) on those scenarios was further analyzed. The results suggest that properly installation of CIPP can reinforce the damaged pipe by reducing the stress concentration and reducing the differential displacement. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2248 | PALERMO RENOVATES WATER MAIN TO COPE WITH SEISMIC ACTIVITY Author: Arnold Cekodhima |
Intl No-Dig-2019 Florence | Danphix S.p.a | 2019 | Close-Fit Linings |
The paper presentsthe unique rehabilitation project of one of Palermo's most important drinking water pipeline. Thanks to this project, the city of Palermo avoided the water emergency during a period of great drought. The high-level engineering design together with the creativity of a "non-standard" technical solution has allowed DanphixS.p.A.to prevent the possible water emergency by raising the bar as far as the trenchless pipeline rehabilitation is concerned. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2326 | Pipe Preservation during Trenchless Installations:There's No Need to Take Unnecessary Risks Author: Cristian Grecco, and Falko Wiethoff |
Intl No-Dig-2019 Florence | Tdc International Ag; Technical Duroplastic Constructions Gmbh | 2019 | Testing & Assessments |
Corrosion is the first cause of pipeline incidents, and one of the most important responsibilities of a pipeline engineer is to choose the right strategy to protect the pipes from it. In trenchless installations, this aspect is even more important as interventions are not possible during the design life of the pipeline and usually such crossings are located in environmentally sensitive areas. Currently, pipeline operators and designers choose between very robust versions of three-layer polyolefin (PE/PP) coatings, hoping the additional thickness will compensate material losses due to abrasion during installation, and relatively thin coatings with very high adhesion properties. In such situation, they expect the coating to perform better in combination with a cathodic protection system in the areas where the steel was exposed due to damages to the coating. In both cases, practical experience has shown that damages cannot be avoided. Currently, specifically on pipes that are installed by trenchless processes, the available methods for identifying wherethe coating damaged cannot provide absolute or accurate information on the location, size and geometry of the damages. Moreover, even thoughcathodic protection verification at HDD locations can be validated close to the starting and final points of the crossings; the region between can only be assumedand thus a questionable strategy.This paper gives evidence on why these strategies are not valid and provides a technical comparison of properties between pipeline coatings used in trenchless installations. It also introduces an engineered mechanical protection system that has been successfully used by German companies for the past 20 years with an impeccable track record. Such a solution is of particular importance to allow the trenchless industry to achieve longer and safer crossings. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2259 | PIPE REHABILITATION SYSTEMS - HOW DO YOU ENSURE THE SYSTEM WILL WITHSTAND THE RIGORS OF DAY TO DAY OPERATION AND MAINTENANCE Author: Richard Swan |
Intl No-Dig-2019 Florence | Picote Solutions | 2019 | Cured in Place Pipeliners |
Picote specialise in pipe cleaning, descaling and the rehabilitation of pipes using a combinationof Cured-in-Place linings (CIPP) and the Picote Brush CoatingTM System. To undertake this type of work Picote has developed a range of "High Speed" pipe cleaning machines and tooling to enable works to be completed quickly, with minimal disruption and without the need to use water, for pipes from diameters DN32 up to DN300.Whether a cured-in-place (CIPP) lining is installed or the pipes are coated using a spray or brush applied coating system it is generally given that the system has a design life of 50 years. However, design engineers and end users rarely consider the important question of whether the system can withstand the rigors of every day to day use and maintenance over the design period.This technical paper will discuss the following test requirements to determine the suitability of any pipe rehabilitation system: oResistance to high pressure water jetting (HPWJ): The test method and pass criteria to be the same as thermoplastic pipesoAbrasion testing: The test method used to assess the resistance of vitrified clay, GRP, concrete and PVC drain and sewer pipes to abrasion by sediments which can also be used as a general abrasion test for CIPP liners, pipe coatings, etc. Finally we will discuss how the Picote Brush CoatingTM System withstood the rigars of the tests which were undertaken by WRc (Water Research Centre). (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2328 | Pipe-filling method for stabilizing empty ducts from the manhole Author: Kenji Hiyoshi and Masashi Shintaku , Keitaro Dekai and Noriyuki Ishizu |
Intl No-Dig-2019 Florence | Ntt Access Network Service Systems Laboratories; Airec Engineering Corporation, Tokyo | 2019 | Associated Technologies, Techniques and Equipment |
We have developed a cost-effective technique for reinforcing RC pipes by using a robot to fill them with mortar from the inside of an existing manhole (L2.3 m × W1.3 m × H1.5 m). This technique was put to practical use in the fieldin the first quarter of 2019.Telecommunication ducts are used for storing and protecting cables, and in places where the ground condition is soft orneeds special care, these ducts are laid inside an RC pipe (where they occupyapproximately15% of the pipe cross-section). When they were originally installedsome 40 years ago, the demand for telecommunication networkswas high,and thus the RC pipeswere installed with empty spaces for future duct installation. However, over time, narrower and higher-capacity cables became available, reducing the demand for further duct installation. Furthermore, sincetheseRC pipesare liable to become increasingly dilapidated, the utilityowner decided to fill the empty spacewith mortarin order to stabilize the ducts/pipes permanently.The key technical points of this technology are as follows: 1) Use of a robot to drill a hole (diameter 75 mm) in an existing duct, through which the RC pipe is filled with mortar, 2) Development of an anti-washout mortar that can fill RC pipes even when there is water inside them, 3) Establishment of a method for checking the airtightness of ducts, and 4) Establishment of visual methods for determining operating procedures and checking the progress of work (including the completionof hole drilling and filling operations).By using this technology, telecommunication facilities can be maintained safely and cost-effectively with less environmental disruption. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2285 | POLYMERIC ALLOY PIPE WITH RESTRAINT JOINT SYSTEMFOR HDD APPLICATIONS Author: Gianfranco Battaglin and Nicola Melotti |
Intl No-Dig-2019 Florence | Fitt Spa | 2019 | Horizontal Directional Drilling |
FITT BLUFORCE RJ is a range of polymeric alloy pipes with restraint joint system. The polymeric alloy consists of unplasticized polyvinyl chloride (PVC-U) and chlorinated polyethylene (CPE): this mix allows for obtaining pipes capable of guaranteeing excellent performances in terms of resistance to crack propagation, ductility and resilience - besides resistance to crushing, corrosion, chlorine and impermeability to pollutants. The system can work continuously at a pressure equal to nominal pressure (PN), supporting the axial load generated by it, and it can work in depression up to -0,8 bar. The joint is equally well performing even for short periods at pressures higher than the nominal one, with resultant axial load reaching up to 440 kN (PN20 in the case of OD400). In trenchless applications, FITT BLUFORCE RJ is a decisive solution for applications on soft or sloping terrains and for direction changes. In those highly technical applications, FITT BLUFORCE RJ fully unleashes its innovative potential, which translates into tangible advantages:- reduction of pipe laying times: thanks to the socket joint, the bars can be assembled during the pulling phase, uninterruptedly;- compact work site: the 6-metre bars minimize the site's bulk - a critical factor especially in works on roads;- no special processes on-site: since there is no need for welding, it is not necessary to use special equipment nor qualified workers;- system flexibility: the combination of the restraint joint angular deflection and the ductility of the polymer alloy bar results in reduced bend radii values;- innovative technical solutions for trenchless technologies: FITT BLUFORCE RJ is the world's first polymer alloy pipe with restraint joint and it is the first polymer-based pipe ever made in Europe.Technical and economical comparison between polymeric alloy and other used pipe technologies have been performed to highlight advantages and disadvantages. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2260 | Quality Control Factors of CIPP Construction Management for Water Main Rehabilitation Author: Wei-Cheng Chen, Yu-Chin Lin, and I-Chun Chen |
Intl No-Dig-2019 Florence | Taipei Water Department; You Tai Feng Technology Co | 2019 | Cured in Place Pipeliners |
Cured-In-Place Pipe (CIPP) technology is worldwide conducted to various pipeline rehabilitations. CIPP entire projectscombine the expertise of material chemistry, pipeline techniques, and civil constructionin water main rehabilitations.Due to the requirementsof high technique level, insufficient training for construction, the restriction of technical transfers, and the inadequacy of equipmentsresulted from limitations of application authorization, some failure projects occurredin the past years.The problems were, for example, collapse of cured tube, inversionhydrostatic pressure decline, and excessive longitudinal folks etc. Once the lining inversionand solidification operationswere mistaken, the cost of reconstructionand the overdue risk of contract period must be assumed. Therefore, material preparation and on-site construction quality management are essential issues.In view of this, this paper proposedtheframework of quality control factors on CIPP construction management, to establish the relationshipsbetween those key factors by the superposition effect, and three mainoperations including resin impregnation process, on-site inversionprocessand curing process.The quality control factors were discussedby means of thecase studiesof practical projectswith 152m MJP DN1000mm and 94m CIPDN800mm water mains of CIPP rehabilitationsin urban area of Taipei. The quality control factors of water mainCIPP in this paper will provide to help the civil engineersof contractors,supervisory units and owners to establishoverall quality concept of CIPPfor reducing the risk of project failures (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2300 | Recent developments of GRP solutions in the booming transportation market Author: Laurent Hesters and Marc Sadok |
Intl No-Dig-2019 Florence | Amiblu France | 2019 | Microtunneling and Pipe Jacking |
GRP pipes of any size or shape have been used for more than 50 years in the water market both in open cut and trenchless ways of installation in the main following fields as sewerage market: gravity collectors, WWTP and pressurized sewer mains including access chambers and ancillaries; storm water market: drainage and collectors and drinking water mainly for water mains Today we see an impressive development of GRP open cut and particularly trenchless pipe solutions in one of the world's largest industries: the transportation market. Transportation sectors range from roads to motorways, airports, high speed and freight railways, urban tramways, container ports, multimodal platforms, ... Transportation is a vital service to every other sector of the economy and massive investments for new and existing infrastructures are made all over the world with objectives of ensuring efficient, long lasting and environmental friendly systems. Among the significant advantages of trenchless GRP solutions, we can mention implementation of an innovating comprehensive solutions (e.g. tailor made for any challenging shape - ovoid, arch shaped...-, OnePass long jacked deep pipelines without interruption of traffic...); clear design in line with severe service conditions (e.g. heavy traffic...); quick and safe installation in complex ongoing sites conditions (e.g. tight schedules constraints...); long life expectancy an environmentally friendly techniques The paper will present how we can apply GRP solutions to the booming transportation market and how we can adapt them to meet its specific needs and constraints. Several case studies jobs will be presented to illustrate this. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2286 | RedEx® Internal sealing collars - Partial Repair and Liner End Sealing for sewage and drinking water pipes Author: Martin Cygiel; Federica Fuselli |
Intl No-Dig-2019 Florence | Pipe-seal-tec Gmbh & Co.; Rotech Srl | 2019 | Cleaning, Localized Repairs and Grouting |
The RedEx® can be used for pipelines DN 800 - DN 6000 and used as liner end collar DN 190 - DN 1200 in almost all tube materials: Steel, Vitreous ceramic, Cast iron, Concrete pipes, Cement mortar, PVC, Asbestos cement, PE, PP, GRP. The cuff is installed by hand, it can only be used for liner end sealing in non-accessible widths DN 190 - DN 800. A confectioned EPDM cuff is set up with stainless steel bands. At a squeezing pressure of 250 bar-350 bar, the sleeve is pressed at a pressure of about 3.5-5.5 bar in the radial direction to the old pipe. Different rubber qualities allow use in media like potable water, service water, waste water, salt water, fuel, gas, acids or oil on request. The RedEx® System is currently the first and only inner sealing system worldwide certificated of 10 Mio. dynamic load changes between 10 bar and -0,9 bar Vacuum in a frequency of 2 Hz. The RedEx system has almost all national and international approvals for the pressure tube and drinking water. The Standard-EPDM and Stainless-Steel rings are usable in temperature from -20°C till 140°C and for compensation of standard-tolerances in the pipe-diameter, pipes with sleeve misalignment and axial offsets. With the special solution RedEx® Connect, dimensional changes (as example DN 800 to DN 1000), larger damaged areas or even drawn bows can be remediated. Egg profiles can be rehabilitated outside the approval up from DN 600/900. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| 2249 | REHABILITATION OF A 10 KM LONG ASBESTOS-CEMENT DRINKING WATER TRUNKMAIN IN SPAIN WITH FLEXIBLE RELINING TECHNOLOGY Author: Jorge Lamazares |
Intl No-Dig-2019 Florence | Sinzatec Canalizaciones S.l. | 2019 | Close-Fit Linings |
Utility providers all over the world are confronted with deterioratingdrinking water pipeline infrastructure. Only in Spain there is around 40.000 km of asbestos cement pipe that is still in contact with drinking water and, as in the rest of the world, this pipes are approaching the end of their useful life. How to attempt their replacement is a great concern and the study of the best methods to replace them has to be done with a focus on safety, cost and environmental protection.Although trenchless technologies are well-established in the sewer industry, little progress has been made in the drinking water arena up to now. The paper introduces the alternatives to the replacement or rehabilitation of asbestos cement pipes and the reasons that can move the decisions to the use of Trenchless Technologies.This paper presents an innovative flexible relining technology that has been conceived for the trenchless rehabilitation of pressure pipes. The paper shows the composition of the Primus Line hose and addresses the specifically developed termination fittings which complete thesystem. Furthermore, the paper demonstrates that this technology permits long insertion lengths and the negotiation of bends. Finally, a case study from Reocín, Spain will address the deployment of the Primus Line technology for the rehabilitation of a 10km long drinking water main. In particular, the complete installation process will be lined out. The case study shows that the flexible relining technology is characterized by short construction periods with significant cost and time savings compared to traditional open trench methods, ease of installation and minimum equipment needs on-site. The paper concludes with an outline of the benefits and limitation of the Primus Line technology. (click to report an error) more... share... |
Non-members: Add to Cart Members: Enter your email to obtain a single download link -OR- Login (above) to download any paper |
| Displaying 41 to 60 of 95 total papers | Previous 20 1 2 3 4 5 Next 20 | ||||||
